aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/utils/make_tables
blob: 1d3023ee9a11456a4d3bc64027f64d8489975e14 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
#!/usr/bin/env perl 
#
# %CopyrightBegin%
#
# Copyright Ericsson AB 1999-2016. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# %CopyrightEnd%
#
use strict;
use File::Basename;

#
# Description:
#   Creates tables for BIFs and atoms.
#
# Usage:
#    make_tables [ Options ] file...
#
# Options:
#    -src directory	Where to write generated C source files (default ".").
#    -include directory Where to generate generated C header files (default ".").
#
# Output:
#    <-src>/erl_am.c
#    <-src>/erl_bif_table.c
#    <-src>/erl_bif_wrap.c
#    <-src>/erl_dirty_bif_wrap.c
#    <-src>/hipe_nbif_impl.c
#    <-include>/hipe_nbif_impl.h
#    <-include>/erl_atom_table.h
#    <-include>/erl_bif_table.h
#
# Author: Bjorn Gustavsson
#

my $progname = basename($0);
my $src = '.';
my $include = '.';

my @atom;
my %atom;
my %atom_alias;
my %aliases;
my $auto_alias_num = 0;
my %dirty_bif_tab;

my @bif;
my @bif_info;
my $dirty_schedulers = 'no';
my $dirty_schedulers_test = 'no';
my $hipe = 'no';

while (@ARGV && $ARGV[0] =~ /^-(\w+)/) {
    my $opt = shift;
    if ($opt eq '-src') {
	$src = shift;
	die "No directory for -src argument specified"
	    unless defined $src;
    } elsif($opt eq '-include') {
	$include = shift;
	die "No directory for -include argument specified"
	    unless defined $include;
    } elsif($opt eq '-ds') {
	$dirty_schedulers = shift;
	die "No -ds argument specified"
	    unless defined $dirty_schedulers;
    } elsif($opt eq '-dst') {
	$dirty_schedulers_test = shift;
	die "No -dst argument specified"
	    unless defined $dirty_schedulers_test;
    } elsif($opt eq '-hipe') {
	$hipe = shift;
	die "No -hipe argument specified"
	    unless defined $hipe;
    } else {
	usage("bad option: $opt");
    }
}


while (<>) {
    next if /^#/;
    next if /^\s*$/;
    my($type, @args) = split;
    if ($type eq 'atom') {
	save_atoms(@args);
    } elsif ($type eq 'bif' or $type eq 'ubif' or $type eq 'gcbif') {
	if (@args > 2) {
	    error("$type only allows two arguments");
	}
	my($bif,$alias) = (@args);
	$bif =~ m@^([a-z_.'0-9]+):(.*)/(\d)$@ or error("invalid BIF");
	my($mod,$name,$arity) = ($1,$2,$3);
	my $mfa = "$mod:$name/$arity";
	save_atoms($mod, $name);
	unless (defined $alias) {
	    $alias = "";
	    $alias = "${mod}_" unless $mod eq 'erlang';
	    $alias .= "${name}_$arity";
	}
	my $sched_type;
	my $alias3 = $alias;

	$sched_type = $dirty_bif_tab{$mfa};

	if (!$sched_type or ($type eq 'ubif')) {
	    $sched_type = 'normal';
	}
	elsif ($sched_type eq 'dirty_cpu') {
	    $alias3 = "schedule_dirty_cpu_$alias"
	}
	elsif ($sched_type eq 'dirty_io') {
	    $alias3 = "schedule_dirty_io_$alias"
	}
	else {
	    error("invalid sched_type: $sched_type");
	}

	my $wrapper;
	if ($type eq 'bif') {
	    $wrapper = "wrap_$alias";
	} else {
	    $wrapper = $alias;
	}
	push(@bif, ["am_$atom_alias{$mod}","am_$atom_alias{$name}",$arity,
		    $alias3,$wrapper,$alias]);
	push(@bif_info, [$type, $sched_type, $alias3, $alias]);
    } elsif ($type eq 'dirty-cpu' or $type eq 'dirty-io'
	     or $type eq 'dirty-cpu-test' or $type eq 'dirty-io-test') {
	if ($dirty_schedulers eq 'yes') {
	    my($bif,$other) = (@args);
	    $bif =~ m@^([a-z_.'0-9]+):(.*)/(\d)$@ or error("invalid BIF");
	    my($mod,$name,$arity) = ($1,$2,$3);
	    my $mfa = "$mod:$name/$arity";
	    if (($type eq 'dirty-cpu')
		or (($dirty_schedulers_test eq 'yes')
		    and ($type eq 'dirty-cpu-test'))) {
		$dirty_bif_tab{$mfa} = 'dirty_cpu';
	    } elsif (($type eq 'dirty-io')
		or (($dirty_schedulers_test eq 'yes')
		    and ($type eq 'dirty-io-test'))) {
		$dirty_bif_tab{$mfa} = 'dirty_io';
	    }
	}
    } else {
	error("invalid line");
    }
} continue {
    close ARGV if eof;
}

#
# Generate the atom header file.
#

open_file("$include/erl_atom_table.h");
print <<EOF;
#ifndef __ERL_ATOM_TABLE_H__
#define __ERL_ATOM_TABLE_H__
extern char* erl_atom_names[];

EOF
my $i;
for ($i = 0; $i < @atom; $i++) {
    my $alias = $atom_alias{$atom[$i]};
    print "#define am_$alias make_atom($i)\n"
	if defined $alias;
}
print "#endif\n";

#
# Generate the atom table file.
#

open_file("$src/erl_atom_table.c");
my $i;
print "char* erl_atom_names[] = {\n";

for ($i = 0; $i < @atom; $i++) {
    print '  "', $atom[$i], '",', "\n";
}
print "  0\n";
print "};\n";

#
# Generate the generic bif list file.
#

open_file("$include/erl_bif_list.h");
my $i;
for ($i = 0; $i < @bif; $i++) {
    # module atom, function atom, arity, C function, table index
    print "BIF_LIST($bif[$i]->[0],$bif[$i]->[1],$bif[$i]->[2],$bif[$i]->[3],$bif[$i]->[5],$i)\n";
}

#
# Generate the bif header file.
#

open_file("$include/erl_bif_table.h");
my $bif_size = @bif;
print <<EOF;
#ifndef __ERL_BIF_TABLE_H__
#define __ERL_BIF_TABLE_H__
typedef void *BifFunction;

typedef struct bif_entry {
    Eterm module;
    Eterm name;
    int arity;
    BifFunction f;
    BifFunction traced;
    BifFunction impl;
} BifEntry;

typedef struct erts_gc_bif {
    BifFunction bif;
    BifFunction gc_bif;
} ErtsGcBif;

extern BifEntry bif_table[];
extern Export* bif_export[];
extern const ErtsGcBif erts_gc_bifs[];

#define BIF_SIZE $bif_size

EOF

my $i;
for ($i = 0; $i < @bif; $i++) {
    print "#define BIF_$bif_info[$i]->[3] $i\n";
}

print "\n";

for ($i = 0; $i < @bif; $i++) {
    my $args = join(', ', 'Process*', 'Eterm*', 'UWord*');
    my $name = $bif_info[$i]->[3];
    print "Eterm $name($args);\n";
    print "Eterm wrap_$name($args);\n";
    print "Eterm erts_gc_$name(Process* p, Eterm* reg, Uint live);\n"
	if $bif_info[$i]->[0] eq 'gcbif';
    print "Eterm $bif_info[$i]->[2]($args);\n"
	unless $bif_info[$i]->[1] eq 'normal';
    print "\n";
}

if ($hipe eq 'yes') {
    print "\n#include \"hipe_nbif_impl.h\"\n";
}

print "\n#endif\n";

#
# Generate the bif table file.
#

open_file("$src/erl_bif_table.c");
my $i;
includes("export.h", "sys.h", "erl_vm.h", "erl_process.h", "bif.h",
	 "erl_bif_table.h", "erl_atom_table.h");

print "\nExport* bif_export[BIF_SIZE];\n";

print "BifEntry bif_table[] = {\n";
for ($i = 0; $i < @bif; $i++) {
    my $func = $bif[$i]->[3];
    print "  {", join(', ', @{$bif[$i]}), "},\n";
}
print "};\n\n";

#
# Generate the bif wrappers file.
#

open_file("$src/erl_bif_wrap.c");
my $i;
includes("export.h", "sys.h", "erl_vm.h", "global.h", "erl_process.h", "bif.h",
	 "erl_bif_table.h", "erl_atom_table.h");
for ($i = 0; $i < @bif; $i++) {
    next if $bif[$i]->[3] eq $bif[$i]->[4]; # Skip unwrapped bifs
    my $arity = $bif[$i]->[2];
    my $func = $bif_info[$i]->[3];
    print "Eterm\n";
    print "wrap_$func(Process* p, Eterm* args, UWord* I)\n";
    print "{\n";
    print "    return erts_bif_trace($i, p, args, I);\n";
    print "}\n\n";
}

#
# Generate erl_gc_bifs.c.
#

open_file("$src/erl_gc_bifs.c");
my $i;
includes("export.h", "sys.h", "erl_vm.h", "global.h", "erl_process.h", "bif.h",
	 "erl_bif_table.h");
print "const ErtsGcBif erts_gc_bifs[] = {\n";
for ($i = 0; $i < @bif; $i++) {
    next unless $bif_info[$i]->[0] eq 'gcbif';
    my $arity = $bif[$i]->[2];
    my $func = $bif[$i]->[3];
    print "  {$func, erts_gc_$func},\n";
}
print "  {0, 0}\n";
print "};\n";

#
# Generate the dirty bif wrappers file.
#

open_file("$src/erl_dirty_bif_wrap.c");
my $i;
includes("erl_process.h", "erl_nfunc_sched.h", "erl_bif_table.h", "erl_atom_table.h");
for ($i = 0; $i < @bif_info; $i++) {
    next if $bif_info[$i]->[1] eq 'normal';
    my $dtype;
    if ($bif_info[$i]->[1] eq 'dirty_cpu') {
	$dtype = "ERTS_SCHED_DIRTY_CPU";
    }
    else {
	$dtype = "ERTS_SCHED_DIRTY_IO";
    }
print <<EOF;
Eterm $bif_info[$i]->[2](Process *c_p, Eterm *regs, BeamInstr *I)
{
    return erts_reschedule_bif(c_p, regs, I, $bif_info[$i]->[3], $dtype);
}

EOF

}

if ($hipe eq 'yes') {

    #
    # Generate the nbif_impl bif wrappers file.
    #

    open_file("$src/hipe_nbif_impl.h");
    print <<EOF;

#ifndef HIPE_NBIF_IMPL_H__
#define HIPE_NBIF_IMPL_H__

EOF

    my $i;
    for ($i = 0; $i < @bif; $i++) {
	print <<EOF;
Eterm nbif_impl_$bif[$i]->[5](Process *c_p, Eterm *regs);
EOF
   }

   print <<EOF;

#endif /* ERL_HIPE_NBIF_IMPL_H__ */

EOF

    #
    # Generate the nbif_impl bif wrappers file.
    #

    open_file("$src/hipe_nbif_impl.c");
    my $i;
    includes("erl_process.h", "erl_nfunc_sched.h", "erl_bif_table.h", "erl_atom_table.h");
    for ($i = 0; $i < @bif; $i++) {

	print <<EOF;
Eterm nbif_impl_$bif[$i]->[5](Process *c_p, Eterm *regs)
{
    return $bif[$i]->[3](c_p, regs, (UWord *) bif_export\[BIF_$bif[$i]->[5]\]);
}

EOF

   }

} # hipe

#
# Utilities follow.
#

sub open_file {			# or die
    my($name) = @_;

    open(FILE, ">$name") or die "$0: Failed to create $name: $!\n";
    select(FILE);
    comment('C');
}

sub includes {
    print "#ifdef HAVE_CONFIG_H\n";
    print "#  include \"config.h\"\n";
    print "#endif /* HAVE_CONFIG_H */\n";
    print map { "#include \"$_\"\n"; } @_;
    print "\n";
}

sub save_atoms {
    my $atom;
    my $alias;

    foreach $atom (@_) {
	if ($atom =~ /^\w+$/) {
	    error("$atom: an atom must start with a lowercase letter\n",
		  "  (use an alias like this: $atom='$atom')")
		unless $atom =~ /^[a-z]/;
	    $alias = $atom;
	} elsif ($atom =~ /^'(.*)'$/) {
	    $atom = $1;
	    $alias = "_AtomAlias$auto_alias_num";
	    $auto_alias_num++;
	} elsif ($atom =~ /^(\w+)='(.*)'$/) {
	    $alias = $1;
	    $atom = $2;
	    error("$alias: an alias must start with an uppercase letter")
		unless $alias =~ /^[A-Z]/;
	} else {
	    error("invalid atom: $atom");
	}
	next if $atom{$atom};
	push(@atom, $atom);
	$atom{$atom} = 1;

	if (defined $alias) {
	    error("$alias: this alias is already in use")
		if defined $aliases{$alias} && $aliases{$alias} ne $atom;
	    $aliases{$alias} = $atom;
	    $atom_alias{$atom} = $alias;
	}
    }
}

sub usage {
    warn "$progname: ", @_, "\n";
    die "usage: $progname -src source-dir -include include-dir file...\n";
}

sub error {
    die "$ARGV($.): ", @_, "\n";
}

sub comment {
    my($lang, @comments) = @_;
    my($prefix);

    if ($lang eq 'C') {
	print "/*\n";
	$prefix = " * ";
    } elsif ($lang eq 'erlang') {
	$prefix = '%% ';
    } else {
	$prefix = '# ';
    }
    my(@prog) = split('/', $0);
    my($prog) = $prog[$#prog];

    if (@comments) {
	my $line;
	foreach $line (@comments) {
	    print "$prefix$line\n";
	}
    } else {
	print "$prefix Warning: Do not edit this file.  It was automatically\n";
	print "$prefix generated by '$progname' on ", (scalar localtime), ".\n";
    }
    if ($lang eq 'C') {
	print " */\n";
    }
    print "\n";
}